Need some opk help please

Ok so last day of af was march 2nd. I usually never cramp besides day 2 of af or have ewcm but did have both on that day .

Told myself I was going to opk as soon as af is done this month. I usually only start a few days after as I ovulate generally cd 11 or 12.

So 3rd I had a positive opk or pretty darn close to ...and since he's been getting lighter.

I know we get an LH surge during af. But I'm confused.

Yes I will keep testing daily to see if it gets darker and then twice a day if it does

But what did I experience? Was that my o? During my period?

Or is that normal for it to go back down and up mid cycle again?